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Data quality report

Arriva UK Bus_Colchester_Welwyn Garden City_20220530

• Please find your data quality observations below.
• What are the different type of observations?
• Download data quality report.csv

555

Bus lines

92%

AMBER
Data quality

391

Critical observations

282

Advisory observations

Contents

Critical observations (391)

These observations are considered critical in terms of data quality. An operator should aim to have zero critical observations in their data.

Timing (14)

Number of observations	Observation category
14	First stop is not a timing point

Data set (377)

Number of observations	Observation category
377	Missing block number

Advisory observations (282)

These observations suggest there may be an error in the data. However, for some types of services these may be intended by the operator. Advisory observations should be investigated and addressed. If the observation is a result of intended behaviour, an operator can suppress the observation.

Stop (49)

Number of observations	Observation category
49	Missing stops

Timing (217)

Number of observations	Observation category
217	No timing point for more than 15 minutes

Journey (16)

Number of observations	Observation category
16	Expired lines